WESTGS FOR TRANSPORTATION — ^WRIGHT 



575 



Graphs (B) and (C) of figure 3 show, respectively, increases in 

 horsepower and cost of equipment. Twin-engined landplanes cost- 

 ing $115,000 may be expected to increase to over $225,000 and four- 

 engined equipment in the $350,000 bracket will be with us soon. In 

 the flying-boat field, we are now in the half-million-dollar class. 

 Graph (Z>) of figure 3 shows the steady increase in average seating 

 capacity, rising from 7 in 1932 to 14 at the present time. 



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^ROWTA/ OF rne /^irplpine 



FlGXJBE 3. 



COMFORT AND SAFETY 



The curves of figure 4 are presented to show improvements m com- 

 fort and safety.2 Graph (A) is extremely important, in that the 

 steady increase in weight per passenger of passenger furnishings and 

 safety equipment shown has been so marked in the past 10 years that 

 we have arrived at the point where the operator now carries the equiva- 

 lent weight of two passengers and baggage for every one that he actu- 

 ally carries ! In other words, passenger furnishings now amount in 

 weight to 175 pounds per passenger with safety equipment at about 15 

 pounds. This increase of 150 pounds per passenger of such equipment 

 between the old Ford and the Douglas DC-3 is a good measure of the 

 improvement in comfort of the modem air liner. An interesting side 



a I am indebted to E. T. AUen for the data necessary to plot curves (A) and (B) and 

 in one or two of the other curves shov?n. 



